Oil burner



May 6 192.4.v 1,492,986

' B. w. HURD UIL BURNER Filedv Dec. 21.` 192,2 2 Sheets-Sheet 1 A. l" l as si 'l N" c llt I ,l N l g Q IH L. l l

l I N a v mi l j w 1 c@ e; l i I v. I L j N I J l l "l l I I l l y JNVENTOR.

I, l ZW/57217462,

By i l C; l' '-1 l ATTGRNEVS.-

Patented May 6, i924.

BENJAMIN W. HURD, OF SAN FRANCISCO, CALIFORNIA.

0.1L BURNER.

Application led December 2l. 1922. Serial No. 608,149

fu all w/'Lom t may 'oncerm Be it known that I, BENJAMIN W. Hman', a citizen of the United States, residing at the city and count-'y ol' San Francisco and State of. California, have invented certain new and useful Improvements in Uil Burners of which the following is a specification.

tomizing rotary oil burners as at present manufactured are difficult and costly to repair and require Athe shutting down lof a plant for a considerable time when repairs are necessary. They also Iadmit of the en! trance of the oil into the cup by gravity and without universal distributionover the interior of the cup.

.It is to overcome these objections that the resent invention has been designed and' tiis invention has tor its principal objects to provide a mounting for an atomizing or burner cup so constructed that the same is solely supported within the nozzle and by the nozzle enablingit to be removed therefrom as a unit. A further object is to provide a construction wherein the burner is constructed of a plurality of sections, one ot which serves as a mounting for the cup and bearing enabling :i new section mounting thevcup and bearingto be substituted by merely disconnecting the nozzle sections.

Another object is to provide a detlector plate over the end .of the fuel feed pipe for de.- i'lecling the oil radially ot the base ot the cup.

lilith the above mentioned and other ob# jects iu view, the invention `consists in the novel ronstruction and combination of parts hereinafter described. illustrated in the accompanyingdrawings, and Setforth in the claims hereto appended, it being understood that yvarious changes in the form, proportion. size and minor details ot construction within the scope of the claims may liu resorted lo without departing from illu` spirit or sacrificing any of the advantages oi' the invention.

' To more lull;Y comprehend the invention y -referenre is directed `to the accompanying Figure 1 is a view in broken slde elevation of the preferred embodiment ot my invention.

Figure 2,is atransverse sectional viewV on line XJ-X01? Figure 1.

Figure 3 is an enlarged sectional view` in detail of the cup and the detiectcr plate within the nozzle tip.

Figure 4: is a sectional view taken on line X-X of Figure 3, and

Figure 5 is a View in perspective of the delector plate removed from the base of the cup. i

Referring more particularly to the several views of the drawings wherein like characters of reference designate corresponding parts, A indicates an oil burner nozzle consisting of the base 1 intermediate nozzle section 2 and rnozzle tip 3 all of tubular formation ,and detachably secured together with the intermediate nozzle section 2 forming a. connecting member `between the vnozzle 1oase l and nozzle tip 8. The nozzle tip 3 is formed with the conventional tapering discharge opening 4, within which is mounted the Well known type of atomizing or burner cup 5. The cup'is of a diameter less than the opening 4 to provide an air passage therearound. Within the intermediate nozzle section 2 is mounted a ing said hub and extending longitudinally within the section 2. Extending from opposite sides of the hub are the hub mount# ing lugs or fingers 7 of a `length to contact with the inner wall of the nozzle section 2, and said lugs atford a means for fastening the hub supporting frame within the section 2. Securing means.' as for example screws 8 may be employed forreception within threaded openings within the lugs 7, and .insertion through corresponding openings S in the Wall of the nozzle section 2 to secure the frame within said nozzle section 2. lnsertable within the tubular frame 6 preferably from its 'forwardend is a tubular cup mounting` hub 10 rotatably supported at its opposite ends within the frame on the respective bearings 11 and 12. The outer race 13 of the bearing 11 abutting against the flange 14 en the frame and the outer racey fittingof thebearing`12 being retained by a nut 16 threaded into the vao and that said hub is in turn rotatably mounted Within and supported by the frame 6, which is in turn detachably secured Within the intermediate nozzle section 2. To the rear end of the hub l0 is secured a rotor 22 clamped thereon by a nut 23 and formed with a radially slotted periphery 24. Said rotor is mounted adjacent to a stationary air deflector 25, also formed with a radially slotted periphery 26, and said deflector is fixed Within the nozzle base l.

The fuel oil for combustion is fed to the cup 5 through a` pipe 27, which passed through the tubular hub 10 and about which said hub rotates. The pipe terminates at the base of the cup 5, and positioned over the discharge end of said pipe is an inverted conical deector plate 28 formed in its center with an inturned conical portion 29 projecting into the discharge end of the pipe 27, and said portion 29 and deliector plate affordin a means for distributing the oil discharge from the pipe 27 uniformly in all directions to the said wall of the cup 5. The peripheral edge 30 of the deliector is positioned at a point below the discharge end of thepipe 27, as in Figure 3 and said deector plate is provided with the supporting legs 31 for securing the same to the base of the cup. The legs at their ends are reduced as at 32, and said reduced portions are adapted for insertion in openings 33,- and after passin thereinto are bent over to retain the de ector Within the cup to rotate therewith. One of the lugs or fingers 7 of the frame 6 is tubular as at 34 affording a i lubricant entrance into the `lubricant chamber 35 surrounding the hub spacer 17, and the opening in said tube 34 is adapted to be closed by a plug 36.

Under certain conditions, it has beenv found desirable to admit additional air into the space surrounding the frame 6 through orts 37 formed in the wall of the intermeiate nozzle section 2, and said ports are controlled by the movement of a ported ring 38 encircling the section 2 and movable axially about the same.

Air under pressure for opf Y"ating the rotor to cause the rotation of the cup 5 at high speed is supplied through the tubular nozzle base by any suitable mechanism, and it will be observed that the air under pressure striking the rotor 22` will act thereon to cause a rotation ofthe hub 10 and cup 5, which cup v mounts the plate 28, the rotation of which deiiects the oil striking the under side thereof toward the wall of the cup so that the aol same will leave the lip of the cup in a film of uniform thickness and uniformly diS- tributed throughout the area of the cup.

Should for any reason the cup bearing or rotor become inoperative, it is only necessary to disconnect the nozzle'tip section 3.

from the intermediate nozzle section 2 and spaced relation to the inner Wall of the burner affording an air passage, a tubular hub rotatably mounted therein, 'an atomizing cup at one end of the hub Within the 'discharge tip, a radially slotted rotor at the other end of the hub and extending into said air passage, means for feeding fuel into the base of the cup and means for rotating said cup.

2. In combination With a tubular burner shell and including a nozzle tip and an intermediate nozzle section, a tubular hub supporting frame movably mounted Within said intermediate nozzle section, a plurality of hub mounting lugs extending therefrom for retaining said frame Within said section to aiord an air passage therearound, a tubular hub rotatably mounted within the frame, a burner cup mounted on one end thereof and projecting into the tip, a radially slotted rotor mounted on the other end, a fuel feed pipe extending through said hub and discharging into said cup at its'base, and a baliie rotatable with the cap and extendin transversely across the discharge end o said pipe. i

3. A rotary oil burner including a nozzle consisting of a tubular nozzle base, a tubular nozzle tip, and a tubular intermediate section all held from rotation and the latter detachably uniting said othert-Wo sections one at each end thereof in alignment, a fuel feed pipe extending through said nozzle and dis charging Within said tip, a rotatable burner cup within said tip and into which said pipe discharges, a bearing for said cup carried by said intermediate section with its maim body spaced from the innerwall of said intermediate section, said bearing being detacliably mounted Within said section and removable as a unit therewith from said nozzle base.

Ll. A rotary oil burner-including a tubular nozzle divided transversel into a plurality of separable sections, a uel feed pipe extending longitudinally of the center thereof, a rotatable burner cup at the discharge end of said burner vand'axially into which said pi e discharges, a tubular rotatable hub throng which said pipe extends and mounting said cup, a bearing :frame integrally mounted Within and supported-by one of said sections and Within which said hub is rotatably mounted, said frame, hub, and

sisl

Yburner cup adapted for reniova from saidv pipe as a unit tions l' 5. A burner for liquid hydrocarbon fuels,

5 including charge tip at one end, a tubular supporting frame mounted within said nozzle with its on the separation of 'said secside wall in spaced relation to the inner wall4 of the burner a'ording an air assage, a

al tubular nozzle having a dis-v atomizing' cup at one end of the hub With-A in the discharge tip, a radially slotted rotor alsocarried by the hub and extending into said air passage, means for feeding fuel ito BENJAMIN WQ HURD. 

